JP5762929B2 - 蛍光体、発光装置、および蛍光体の製造方法 - Google Patents
蛍光体、発光装置、および蛍光体の製造方法 Download PDFInfo
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- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
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- H01L2224/481—Disposition
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- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
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Description
(ここで、MはSrであり、Srの一部はBa,Ca,およびMgから選ばれる少なくとも一種で置換されていてもよい。x,y,z,uおよびwは、それぞれ以下を満たす。
1.8≦z−u、 13≦u+w≦15)
(ここで、MはSrであり、Srの一部はBa,Ca,およびMgから選ばれる少なくとも一種で置換されていてもよい。x,y,z,uおよびwは、それぞれ以下を満たす。
1.8≦z−u、 13≦u+w≦15)
上記一般式(1)に示されるように、発光中心元素CeはMの少なくとも一部を置換する。MはSrであり、Srの一部は、Ba、CaおよびMgから選ばれる少なくとも一種で置換されていてもよい。M全体の15at.%以下、より望ましくは10at.%以下であれば、Ba,CaおよびMgから選ばれる少なくとも一種が含有されていても、異相の生成が促進されることはない。
本実施形態にかかる黄色発光蛍光体は、温度特性が良好であるとともに、発光スペクトル半値幅の広い黄色光を高い効率で発光できる。400〜500nmの波長範囲内に発光ピークを有する光を発する発光素子と組み合わせることによって、発光特性の優れた白色発光装置が得られる。
上記表9に示されるように、実施例1〜17の蛍光体のいずれにおいても、x,y,z,u,およびwは、以下に示す範囲内である。
1 .8≦z−u、 13≦u+w≦15
所定の組成を有しているので、実施例の蛍光体は、発光スペクトル半値幅の広い黄色光を高い効率で発光することができ、しかも温度特性も良好である。一方、十分な明るさが得られない比較例1は、z−uが1.39〜1.41と小さい。さらに比較例2は、zが3.56と大きく、uは2.17と大きい。
303…O原子またはN原子; 100…基材; 101…リード; 102…リード
103…パッケージカップ; 104…反射面; 105…凹部
106…発光チップ; 107…ボンディングワイヤー
108…ボンディングワイヤー; 109…蛍光発光層; 110…蛍光体
111…樹脂層; 201…絶縁基板; 202…発光素子
203…ボンディングワイヤー; 204…内側透明樹脂層
205…蛍光発光層; 206…外側透明樹脂層; 207…蛍光体
208…樹脂層。
Claims (6)
- 250〜500nmの波長範囲内に発光ピークを有する光で励起した際に、500〜600nmの波長範囲内に発光ピークを示し、下記一般式(1)で表わされ、斜方晶系の結晶構造を有することを特徴とする蛍光体。
(M1-xCex)2yAlzSi10-zOuNw (1)(ここで、MはSrであり、Srの一部はBa,Ca,およびMgから選ばれる少なくとも一種で置換されていてもよい。x,y,z,uおよびwは、それぞれ以下を満たす。
0<x≦1、 0.8≦y≦1.1、 2≦z≦3.5、 u≦1
1.8≦z−u、 13≦u+w≦15) - 前記蛍光体は、Cu−Kα線を用いたBragg−Brendano法によるX線回折において、15.05−15.15,23.03−23.13,24.87−24.97,25.7−25.8,25.97−26.07,29.33−29.43,30.92−31.02,31.65−31.75,31.88−31.98,33.02−33.12,33.59−33.69,34.35−34.45,35.2−35.3,36.02−36.12,36.55−36.65,37.3−37.4,56.5−56.6の回折角度(2θ)に、少なくとも10本のピークを有することを特徴とする請求項1に記載の蛍光体。
- 前記蛍光体は、空間群Pna21に属する結晶構造を有することを特徴とする請求項1または2に記載の蛍光体。
- 250〜500nmの波長範囲内に発光ピークを有する光を発する発光素子と、
前記発光素子からの光を受けて黄色発光する蛍光体を含有する蛍光発光層とを具備し、前記黄色発光蛍光体は、請求項1乃至3のいずれか1項に記載の蛍光体を含むことを特徴とする発光装置。 - 請求項1乃至3のいずれか1項に記載の蛍光体の製造方法であって、
Mの窒化物および炭化物から選択されるM原料と、Alの窒化物、酸化物および炭化物から選択されるAl原料と、Siの窒化物、酸化物および炭化物から選択されるSi原料と、Ceの酸化物、窒化物および炭酸塩から選択されるCe原料とを混合して混合物を得る工程と、
前記混合物を5気圧以上の圧力下、1500〜2000℃で焼成する工程と
を具備することを特徴とする製造方法。 - 前記混合物の焼成は、窒素雰囲気中で行なわれることを特徴とする請求項5に記載の製造方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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JP2011250599A JP5762929B2 (ja) | 2011-11-16 | 2011-11-16 | 蛍光体、発光装置、および蛍光体の製造方法 |
TW101131175A TWI515285B (zh) | 2011-11-16 | 2012-08-28 | 發光材料 |
CN201210315909.7A CN103113895B (zh) | 2011-11-16 | 2012-08-30 | 发光材料 |
KR20120095340A KR20130054123A (ko) | 2011-11-16 | 2012-08-30 | 발광 물질 |
EP20120182360 EP2597129A1 (en) | 2011-11-16 | 2012-08-30 | Luminescent materials on the basis of cerium doped SrSiAlON derivates |
US13/601,219 US9133391B2 (en) | 2011-11-16 | 2012-08-31 | Luminescent material |
KR1020140126822A KR101575531B1 (ko) | 2011-11-16 | 2014-09-23 | 발광 물질 |
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JP5762929B2 true JP5762929B2 (ja) | 2015-08-12 |
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US (1) | US9133391B2 (ja) |
EP (1) | EP2597129A1 (ja) |
JP (1) | JP5762929B2 (ja) |
KR (2) | KR20130054123A (ja) |
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JP5746672B2 (ja) | 2012-09-25 | 2015-07-08 | 株式会社東芝 | 蛍光体、発光装置、および蛍光体の製造方法 |
JP6081235B2 (ja) | 2013-03-07 | 2017-02-15 | 株式会社東芝 | 白色発光装置 |
JP2014177592A (ja) * | 2013-03-15 | 2014-09-25 | Toshiba Corp | 蛍光体およびそれを用いた発光装置 |
JP2014181260A (ja) * | 2013-03-18 | 2014-09-29 | Toshiba Corp | 蛍光体、発光装置、および蛍光体の製造方法 |
JP2014224182A (ja) | 2013-05-15 | 2014-12-04 | 株式会社東芝 | 蛍光体、発光装置、および蛍光体の製造方法 |
JP2015157919A (ja) * | 2014-02-25 | 2015-09-03 | 株式会社東芝 | 蛍光体、発光装置、および蛍光体の製造方法 |
JP2015166416A (ja) * | 2014-03-03 | 2015-09-24 | 株式会社東芝 | 蛍光体、蛍光体の製造方法およびそれを用いた発光装置 |
JP2015187250A (ja) * | 2014-03-12 | 2015-10-29 | 株式会社東芝 | 蛍光体、その製造方法、およびその蛍光体を用いた発光装置 |
JP2015211202A (ja) * | 2014-04-30 | 2015-11-24 | 株式会社東芝 | 発光装置 |
WO2016021705A1 (ja) * | 2014-08-07 | 2016-02-11 | 三菱化学株式会社 | 蛍光体、発光装置、画像表示装置及び照明装置 |
JP2016060845A (ja) * | 2014-09-18 | 2016-04-25 | 株式会社東芝 | 蛍光体、蛍光体の製造方法、およびそれを用いた発光装置 |
JP2016060844A (ja) * | 2014-09-18 | 2016-04-25 | 株式会社東芝 | 蛍光体、発光装置、および蛍光体の製造方法 |
WO2017051457A1 (ja) * | 2015-09-24 | 2017-03-30 | 株式会社 東芝 | 蛍光体、その製造方法、およびその蛍光体を用いた発光装置 |
CN108922955B (zh) * | 2018-06-25 | 2024-04-16 | 欧普照明股份有限公司 | 一种光源模组及包括该光源模组的照明装置 |
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US7524437B2 (en) * | 2005-03-04 | 2009-04-28 | Dowa Electronics Materials Co., Ltd. | Phosphor and manufacturing method of the same, and light emitting device using the phosphor |
KR20070115951A (ko) | 2005-03-04 | 2007-12-06 | 도와 일렉트로닉스 가부시키가이샤 | 형광체 및 그 제조 방법 및 상기 형광체를 이용한 발광장치 |
JP4975269B2 (ja) * | 2005-04-28 | 2012-07-11 | Dowaホールディングス株式会社 | 蛍光体およびその製造方法、並びに当該蛍光体を用いた発光装置 |
EP1930393A4 (en) | 2005-09-27 | 2010-11-03 | Dowa Electronics Materials Co Ltd | FLUORESCENT, MANUFACTURING METHOD AND LIGHTING DEVICE THEREOF |
JP2009510230A (ja) * | 2005-09-30 | 2009-03-12 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア | 固体照明用途のニトリドおよびオキシニトリドセリウム系蛍光体材料 |
EP2308946B1 (en) | 2006-03-10 | 2013-07-24 | Kabushiki Kaisha Toshiba | Luminescent material and light-emitting device |
US8469760B2 (en) * | 2006-03-31 | 2013-06-25 | Dowa Electronics Materials Co., Ltd. | Light emitting device and method for producing same |
JP4869317B2 (ja) * | 2008-10-29 | 2012-02-08 | 株式会社東芝 | 赤色蛍光体およびそれを用いた発光装置 |
US8414795B2 (en) | 2010-09-09 | 2013-04-09 | Kabushiki Kaisha Toshiba | Red light-emitting fluorescent substance and light-emitting device employing the same |
JP5185421B2 (ja) | 2010-09-09 | 2013-04-17 | 株式会社東芝 | 赤色発光蛍光体およびそれを用いた発光装置 |
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TWI515285B (zh) | 2016-01-01 |
KR20130054123A (ko) | 2013-05-24 |
KR101575531B1 (ko) | 2015-12-07 |
EP2597129A1 (en) | 2013-05-29 |
TW201335336A (zh) | 2013-09-01 |
KR20140130078A (ko) | 2014-11-07 |
US9133391B2 (en) | 2015-09-15 |
US20130241387A1 (en) | 2013-09-19 |
CN103113895B (zh) | 2015-08-19 |
JP2013104041A (ja) | 2013-05-30 |
CN103113895A (zh) | 2013-05-22 |
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